DWORD _RegOpenKey(HKEY hKey, LPSTR lpszSubKey, LPHKEY lphKey)
Opens the registry key for the given registry path.
hKey
Handle of a previously opened key or one of the predefined root keys given in Predefined Keys.
lpszSubKey
Address of a null-terminated string specifying the subkey to be open. May also be NULL or NULL-string.
lphKey
Address of the variable that receives the handle of the opened key.